>
>
> On 8/19/2019 7:25 PM, Li RongQing wrote:
> > It expects gfp_t, but got unsigned int mode
> >
> > Fixes: 6e2059b53f98 ("ipv4/igmp: init group mode as INCLUDE when join
> > source group")
> > Signed-off-by: Li RongQing <lirongq...@baidu.com>
> > Signed-off-by: Zhang Yu <zhangy...@baidu.com>
>
> You have identified a problem, but I don't think it came from this commit,
> rather from:
>
> 9fb20801dab4 ("net: Fix ip_mc_{dec,inc}_group allocation context")
>
> see below for details.
>
> > ---
> > net/ipv4/igmp.c | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index
> > 180f6896b98b..b8352d716253 100644
> > --- a/net/ipv4/igmp.c
> > +++ b/net/ipv4/igmp.c
> > @@ -1475,7 +1475,7 @@ EXPORT_SYMBOL(__ip_mc_inc_group);
> >
> > void ip_mc_inc_group(struct in_device *in_dev, __be32 addr) {
> > - __ip_mc_inc_group(in_dev, addr, MCAST_EXCLUDE);
> > + __ip_mc_inc_group(in_dev, addr, GFP_KERNEL);
>
> That part looks fine.
>
> > }
> > EXPORT_SYMBOL(ip_mc_inc_group);
> >
> > @@ -2197,7 +2197,7 @@ static int __ip_mc_join_group(struct sock *sk,
> struct ip_mreqn *imr,
> > iml->sflist = NULL;
> > iml->sfmode = mode;
> > rcu_assign_pointer(inet->mc_list, iml);
> > - __ip_mc_inc_group(in_dev, addr, mode);
> > + __ip_mc_inc_group(in_dev, addr, GFP_KERNEL);
>
> But here, we probably want to pass both mode and gfp_t and use
> ____ip_mc_inc_group(in_dev, addr, mode, GFP_KERNEL):
>
> diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index
> 180f6896b98b..2459b5e3fd98 100644
> --- a/net/ipv4/igmp.c
> +++ b/net/ipv4/igmp.c
> @@ -2197,7 +2197,7 @@ static int __ip_mc_join_group(struct sock *sk,
> struct ip_mreqn *imr,
> iml->sflist = NULL;
> iml->sfmode = mode;
> rcu_assign_pointer(inet->mc_list, iml);
> - __ip_mc_inc_group(in_dev, addr, mode);
> + ____ip_mc_inc_group(in_dev, addr, mode, GFP_KERNEL);
> err = 0;
> done:
> return err;
>
> What do you think?
You are right, I will send V2
Thanks
-RongQing
